1 /* 2 * QEMU accel class, system emulation components 3 * 4 * Copyright (c) 2003-2008 Fabrice Bellard 5 * Copyright (c) 2014 Red Hat Inc. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a copy 8 * of this software and associated documentation files (the "Software"), to deal 9 * in the Software without restriction, including without limitation the rights 10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 11 * copies of the Software, and to permit persons to whom the Software is 12 * furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included in 15 * all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 23 * THE SOFTWARE. 24 */ 25 26 #include "qemu/osdep.h" 27 #include "qemu/accel.h" 28 #include "qapi/qapi-commands-accelerator.h" 29 #include "monitor/monitor.h" 30 #include "hw/boards.h" 31 #include "hw/core/cpu.h" 32 #include "accel/accel-ops.h" 33 #include "accel/accel-cpu-ops.h" 34 #include "system/cpus.h" 35 #include "qemu/error-report.h" 36 #include "accel-internal.h" 37 38 int accel_init_machine(AccelState *accel, MachineState *ms) 39 { 40 AccelClass *acc = ACCEL_GET_CLASS(accel); 41 int ret; 42 ms->accelerator = accel; 43 *(acc->allowed) = true; 44 ret = acc->init_machine(accel, ms); 45 if (ret < 0) { 46 ms->accelerator = NULL; 47 *(acc->allowed) = false; 48 object_unref(OBJECT(accel)); 49 } else { 50 object_set_accelerator_compat_props(acc->compat_props); 51 } 52 return ret; 53 } 54 55 AccelState *current_accel(void) 56 { 57 return current_machine->accelerator; 58 } 59 60 void accel_setup_post(MachineState *ms) 61 { 62 AccelState *accel = ms->accelerator; 63 AccelClass *acc = ACCEL_GET_CLASS(accel); 64 if (acc->setup_post) { 65 acc->setup_post(accel); 66 } 67 } 68 69 void accel_pre_resume(MachineState *ms, bool step_pending) 70 { 71 AccelState *accel = ms->accelerator; 72 AccelClass *acc = ACCEL_GET_CLASS(accel); 73 if (acc->pre_resume_vm) { 74 acc->pre_resume_vm(accel, step_pending); 75 } 76 } 77 78 /* initialize the arch-independent accel operation interfaces */ 79 void accel_init_ops_interfaces(AccelClass *ac) 80 { 81 const char *ac_name; 82 char *ops_name; 83 ObjectClass *oc; 84 AccelOpsClass *ops; 85 86 ac_name = object_class_get_name(OBJECT_CLASS(ac)); 87 g_assert(ac_name != NULL); 88 89 ops_name = g_strdup_printf("%s" ACCEL_OPS_SUFFIX, ac_name); 90 oc = module_object_class_by_name(ops_name); 91 if (!oc) { 92 error_report("fatal: could not load module for type '%s'", ops_name); 93 exit(1); 94 } 95 g_free(ops_name); 96 /* 97 * all accelerators need to define ops, providing at least a mandatory 98 * non-NULL create_vcpu_thread operation. 99 */ 100 ops = ACCEL_OPS_CLASS(oc); 101 ac->ops = ops; 102 if (ops->ops_init) { 103 ops->ops_init(ac); 104 } 105 cpus_register_accel(ops); 106 } 107 108 static void accel_ops_class_init(ObjectClass *oc, const void *data) 109 { 110 monitor_register_hmp_info_hrt("accel", qmp_x_accel_stats); 111 } 112 113 static const TypeInfo accel_ops_type_info = { 114 .name = TYPE_ACCEL_OPS, 115 .parent = TYPE_OBJECT, 116 .abstract = true, 117 .class_size = sizeof(AccelOpsClass), 118 .class_init = accel_ops_class_init, 119 }; 120 121 static void accel_system_register_types(void) 122 { 123 type_register_static(&accel_ops_type_info); 124 } 125 type_init(accel_system_register_types); 126